# 模式append 追加，内容结尾处追加新内容
with open("./files/lll.txt","a",encoding="utf-8") as f:
    f.write('这是追加的内容1\n')
    f.write('这是追加的内容2\n')
    f.write('这是追加的内容3\n')



with open("./files/lll.txt","r",encoding="utf-8") as f:
    print(f.read())

